Crossword clues for chromite
The Collaborative International Dictionary
Chromite \Chro"mite\, n.
(Min.) A black submetallic mineral consisting of oxide of chromium and iron; -- called also chromic iron.
(Chem.) A compound or salt of chromous hydroxide regarded as an acid. [R.]
n. 1 (context mineral English) A dark brown mineral species with the formula FeCr2O4. 2 Any member of the chromite-magnesiochromite series that is a mixed oxide of iron, magnesium and chromium with the formula (Fe,Mg)Cr2O4. It is a commercial source of chromium.
n. a brownish-black mineral; the major source of chromium
Chromite is an iron chromium oxide: FeCrO. It is an oxide mineral belonging to the spinel group. Magnesium can substitute for iron in variable amounts as it forms a solid solution with magnesiochromite (MgCrO); substitution of aluminium occurs leading to hercynite (FeAlO).
In chemistry, a chromite refers to compounds formally containing the anion . The anion does not exist per se, unless combined with tightly bonded cations. The most famous chromite is the mineral by the same name, FeCrO but many other chromites are known.
Although the majority of chromites have the formula MCrO or MCrO, the term chromite refers also to other anionic compounds containing Cr(III). For example, hexacyanochromite and hexahydroxychromite refer to the anions and , respectively. Under IUPAC naming conventions, chromate(III) is preferred over chromite, although this nomenclature is rarely followed.
Chromite compounds such as FeCrO may be regarded as being derived from the hypothetical "chromous acid", , but this species does not exist. Chromites are formed by reaction of chromium(III) oxide with metal oxides:CrO + MgO → MgCrO
Usage examples of "chromite".
Gustavus Adolphus to send an expedition to Finland to look for chromite at Kemi.
If chromite in the up-time universe was used for a dye, he might be able to use that fact to enlist Amsterdam dye makers in an expedition.
It should be a simple matter to negotiate for the land grants needed to mine the chromite in the Baltimore area.
Nigekus would never have dreamed that after eighteen years working the chromite digs in the hills above the village, the little colony would still owe a debt to the captain of the freighter that had brought them there.